This Python exercise will help you to practice random data generation techniques. This exercise question focuses on generating random numbers, choices, and samples using the random module and secrets module.
Also Read: Python Random Data Generation Quiz
This exercise includes:
- 10 questions.
- The solution is provided at the end of each question.
- When you complete each question, you will be more familiar with random data generation techniques in Python.
Refer to the following tutorials to solve the exercise.
Use Online Code Editor to solve each question.
Table of contents
- Exercise 1: Generate 3 random integers between 100 and 999 which is divisible by 5
- Exercise 2: Random Lottery Pick. Generate 100 random lottery tickets and pick two lucky tickets from it as a winner.
- Exercise 3: Generate 6 digit random secure OTP
- Exercise 4: Pick a random character from a given String
- Exercise 5: Generate random String of length 5
- Exercise 6: Generate a random Password which meets the following conditions
- Exercise 7: Calculate multiplication of two random float numbers
- Exercise 8: Generate random secure token of 64 bytes and random URL
- Exercise 9: Roll dice in such a way that every time you get the same number
- Exercise 10: Generate a random date between given start and end dates
Exercise 1: Generate 3 random integers between 100 and 999 which is divisible by 5
Reference article for help: Python get a random number within a range
Show Solution
import random
print("Generating 3 random integer number between 100 and 999 divisible by 5")
for num in range(3):
print(random.randrange(100, 999, 5), end=', ')Exercise 2: Random Lottery Pick. Generate 100 random lottery tickets and pick two lucky tickets from it as a winner.
Note you must adhere to the following conditions:
- The lottery number must be 10 digits long.
- All 100 ticket number must be unique.
Hint: Generate a random list of 1000 numbers using randrange() and then use the sample() method to pick lucky 2 tickets.
Show Solution
import random
lottery_tickets_list = []
print("creating 100 random lottery tickets")
# to get 100 ticket
for i in range(100):
# ticket number must be 10 digit (1000000000, 9999999999)
lottery_tickets_list.append(random.randrange(1000000000, 9999999999))
# pick 2 luck tickets
winners = random.sample(lottery_tickets_list, 2)
print("Lucky 2 lottery tickets are", winners)
Exercise 3: Generate 6 digit random secure OTP
Reference article for help:
Show Solution
import secrets
#Getting systemRandom class instance out of secrets module
secretsGenerator = secrets.SystemRandom()
print("Generating 6 digit random OTP")
otp = secretsGenerator.randrange(100000, 999999)
print("Secure random OTP is ", otp)Exercise 4: Pick a random character from a given String
Reference article for help: random.choice()
Show Solution
import random
name = 'pynative'
char = random.choice(name)
print("random char is ", char)Exercise 5: Generate random String of length 5
Note: String must be the combination of the UPPER case and lower case letters only. No numbers and a special symbol.
Reference article for help: Generate random String in Python.
Show Solution
import random
import string
def randomString(stringLength):
"""Generate a random string of 5 charcters"""
letters = string.ascii_letters
return ''.join(random.choice(letters) for i in range(stringLength))
print ("Random String is ", randomString(5) )Exercise 6: Generate a random Password which meets the following conditions
- Password length must be 10 characters long.
- It must contain at least 2 upper case letters, 1 digit, and 1 special symbol.
Reference article for help: Generate random String and Password in Python
Show Solution
import random
import string
def randomPassword():
randomSource = string.ascii_letters + string.digits + string.punctuation
password = random.sample(randomSource, 6)
password += random.sample(string.ascii_uppercase, 2)
password += random.choice(string.digits)
password += random.choice(string.punctuation)
passwordList = list(password)
random.SystemRandom().shuffle(passwordList)
password = ''.join(passwordList)
return password
print ("Password is ", randomPassword())Exercise 7: Calculate multiplication of two random float numbers
Note:
- First random float number must be between 0.1 and 1
- Second random float number must be between 9.5 and 99.5
Reference article for help: Generate a random float number between a float range
Show Solution
import random
num1 = random.random()
print("First Random float is ", num1)
num2 = random.uniform(9.5, 99.5)
print("Second Random float is ", num1)
num3 = num1 * num2
print("Multiplication is ", num3)Exercise 8: Generate random secure token of 64 bytes and random URL
Reference article for help: Python secrets module to generate a secure token and URL
Show Solution
import secrets
print("Random secure Hexadecimal token is ", secrets.token_hex(64))
print("Random secure URL is ", secrets.token_urlsafe(64))Exercise 9: Roll dice in such a way that every time you get the same number
Dice has 6 numbers (from 1 to 6). Roll dice in such a way that every time you must get the same output number. do this 5 times.
Reference article for help:
Show Solution
import random
dice = [1, 2, 3, 4, 5, 6]
print("Randomly selecting same number of a dice")
for i in range(5):
random.seed(25)
print(random.choice(dice))Exercise 10: Generate a random date between given start and end dates
Show Solution
import random
import time
def getRandomDate(startDate, endDate ):
print("Printing random date between", startDate, " and ", endDate)
randomGenerator = random.random()
dateFormat = '%m/%d/%Y'
startTime = time.mktime(time.strptime(startDate, dateFormat))
endTime = time.mktime(time.strptime(endDate, dateFormat))
randomTime = startTime + randomGenerator * (endTime - startTime)
randomDate = time.strftime(dateFormat, time.localtime(randomTime))
return randomDate
print ("Random Date = ", getRandomDate("1/1/2016", "12/12/2018"))
